diff --git a/requirements.txt b/requirements.txt
index ab7458e..3849b35 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,7 +39,7 @@ pickleshare==0.7.5
 pkg-resources==0.0.0
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.9.0
+protobuf==3.18.3
 ptyprocess==0.6.0
 Pygments==2.4.2
 pyrsistent==0.15.3